So, I have had a mouth ulcer for about a week and it hurts less now. I was brushing my teeth, I wasn't being harsh or anything but then I noticed there was a lot of blood on my toothbrush and in my mouth. I thought it was just my gums but then I noticed it was my ulcer bleeding like a lot. It wasn't hurting or anything but should I be concerned lol? It still doesn't hurt but there was a lot of blood even when I was rinsing my mouth out a bunch of times.